Surface Segregation in Polymer Blends Driven by Surface Freezing

2006 ◽  
Vol 39 (22) ◽  
pp. 7467-7470 ◽  
Author(s):  
Shishir Prasad ◽  
Laurie Hanne ◽  
Ali Dhinojwala
Keyword(s):  
Polymer Blends ◽  
Surface Segregation ◽  
Surface Freezing

Surface segregation driven by molecular architecture asymmetry in polymer blends

2014 ◽  
Vol 113 (22) ◽  
Author(s):  
Jae Sik Lee ◽  
Nam-Heui Lee ◽  
Somesh Peri ◽  
Mark D. Foster ◽  
Charles F. Majkrzak ◽  
...  
Keyword(s):  
Polymer Blends ◽  
Surface Segregation ◽  
Molecular Architecture

Do “Nonequilibrium” Effects Control Strong Surface Segregation from Polymer Blends?

2004 ◽  
Vol 37 (1) ◽  
pp. 9-12 ◽  
Author(s):  
Ananth Indrakanti ◽  
Ronald L. Jones ◽  
Sanat K. Kumar
Keyword(s):  
Polymer Blends ◽  
Surface Segregation ◽  
Strong Surface ◽  
Nonequilibrium Effects

Quantitative ATR FT-IR Analysis of Surface Segregation of Polymer Blends of Polystyrene/Poly(Dimethylsiloxane)-co-polystyrene

1998 ◽  
Vol 52 (3) ◽  
pp. 361-366 ◽  
Author(s):  
Jiaxing Chen ◽  
Joseph A. Gardella
Keyword(s):  
Polymer Blends ◽  
Penetration Depth ◽  
Surface Segregation ◽  
Calibration Procedure ◽  
Attenuated Total Reflection ◽  
Depth Dependence ◽  
Quantitative Surface Analysis ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

The surface segregation of a series of two-component polymer blends of polystyrene/poly(dimethylsiloxane)-co-polystyrene has been studied by attenuated total reflection Fourier transform infrared (ATR FT-IR) spectroscopy. We examined the details of calibration for quantitative ATR FT-IR. The quantitation is based on calibration of Beer's law by transmission FT-IR measurements. The effect of spectral distortion and penetration depth dependence of radiation wavelength due to ATR sampling is evaluated. ATR spectra are corrected for penetration depth dependence before being used for quantitation. The corrected ATR spectra were compared with the transmission spectra of the same samples. Peak area ratios using one peak from each component were measured for the determination of the concentration of surface poly(dimethylsiloxane). The correction and calibration procedure improves the accuracy of quantitative surface analysis in the range of micrometer sampling depth. Unlike other approaches for quantification of ATR data on polymers, this method can be used for systems with a complex, unknown concentration gradient near the surface such as the blend system reported here.

scholarly journals Surface segregation of conformationally asymmetric polymer blends

2006 ◽  
Vol 73 (3) ◽  
Author(s):  
Semjon Stepanow ◽  
Andrei A. Fedorenko
Keyword(s):  
Polymer Blends ◽  
Surface Segregation

The Role of Intefacial Diffuseness on Surface Segregation From Polymer Blends

2007 ◽  
Vol 5 (2-3) ◽  
pp. 75-85
Author(s):  
Sanat K. Kumar ◽  
Igal Szleifer
Keyword(s):  
Polymer Blends ◽  
Surface Segregation

Surface segregation in conformationally asymmetric polymer blends: Incompressibility and boundary conditions

1996 ◽  
Vol 104 (16) ◽  
pp. 6387-6397 ◽  
Author(s):  
David T. Wu ◽  
Glenn H. Fredrickson ◽  
Jean‐Pierre Carton
Keyword(s):  
Boundary Conditions ◽  
Polymer Blends ◽  
Surface Segregation

scholarly journals Surface segregation in polymer blends: a Monte Carlo simulation

1992 ◽  
Vol 25 (19) ◽  
pp. 4895-4901 ◽  
Author(s):  
P. Cifra ◽  
F. E. Karasz ◽  
W. J. MacKnight
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Polymer Blends ◽  
Surface Segregation
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